49471640 has 16 divisors (see below), whose sum is σ = 111311280. Its totient is φ = 19788640.

The previous prime is 49471633. The next prime is 49471657. The reversal of 49471640 is 4617494.

It is a self number, because there is not a number n which added to its sum of digits gives 49471640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618356 + ... + 618435.

It is an arithmetic number, because the mean of its divisors is an integer number (6956955).

Almost surely, 2^49471640 is an apocalyptic number.

49471640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49471640 is an abundant number, since it is smaller than the sum of its proper divisors (61839640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49471640 is a wasteful number, since it uses less digits than its factorization.

49471640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236802 (or 1236798 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 49471640 is about 7033.6078935352. The cubic root of 49471640 is about 367.1008886952.

The spelling of 49471640 in words is "forty-nine million, four hundred seventy-one thousand, six hundred forty".